code: def step_impl_image_pop_up(context):
      """Check that a image window pops up (no-op currently).
  
      Args:
          context (behave.runner.Context): Test context
  
      """
  
file_path: satpy/satpy/tests/features/steps/steps-save.py
imports: from unittest.mock import patch
  from behave import given, then, use_step_matcher, when
label_desc: Use image node_id 3 for calling a global function with example usage: step_impl_image_pop_up(context) without return types